Same as Fig. 9, but using the velocity structure of Milaković et al. (2021) for their region I (corresponding to part of our left region) which used a compound broadening model (i.e. turbulent and thermal broadening mechanisms). This model was used to fit our ESPRESSO spectrum with VPFIT. We note the significant, correlated structures in the composite residual spectrum (top panel) and in individual transitions, especially Mg II λ2796 and Fe II λ2600 near the strongest absorption feature.